From eenews:  Environmentalists filed a lawsuit today against Montana, claiming its Department of Transportation failed to conduct the necessary environmental review before approving an oil company’s request to transport heavy loads to Canada’s tar sands region. The approved project allows Imperial Oil Ltd. to move 207 oversize-load trucks through the state to the Kearl oil sands in Alberta. The company is also authorized to carry out certain road improvements. Known as the Kearl Module Transportation Project, the proposal would allow the oil company to transport heavy equipment on the final part of its journey from South Korea, where it is manufactured. The parts will be shipped to Vancouver, British Columbia, then up the Columbia River and Snake River to Lewiston, Idaho, before being transferred to tractor-trailers. Various environmental groups, including the National Wildlife Federation and the Sierra Club, have joined Missoula County in challenging the decision to allow the project to go ahead. The groups have sued under the Montana Environmental Policy Act, the state-law equivalent of the federal National Environmental Policy Act. The lawsuit alleges that the state issued approval “without adequately identifying and analyzing all relevant impacts of the project and with analyzing a broad range of alternatives” [...]